Normal module mn = 2 mm
Pinion:
- Helix angle B1 = 30 deg., right hand
- Face module ms1 = 2.31
- Tooth number Z1 = 20
- Pitch circle dia. D1 = 46.2 mm
Wheel:
- Helix angle B2 = 60 deg., right hand
- Face module ms2 = 4.0
- Tooth number Z2 = 30
- Pitch circle dia. D2 = 120 mm
Angle between gear axles E = B1 + B2 = 90 deg.
Velocity ratio: i = Z2/Z1 = 1.5 (not D2/D1 = 2.6)